Open Safari and navigate to a content-heavy website (macobserver.com), pause 20 seconds.

Navigate to a second content-heavy website (cnn.com), pause 20 seconds.

Open Mail, pause 10 seconds to allow any messages to download

Close all open applications

Log a time stamp to a text file

Repeat

Their results:

Build 12B17 was the developer release of the OS X 10.8.1 update, while build 12B19 is the public release. Removing the Wi-Fi icon from the menu bar was a fix suggested by a MacObserver reader, which obviously didn’t work.

As the chart shows, there’s still a one hour difference in battery life between Lion and the newest release of Mountain Lion. Apple’s expected to continue improving upon battery life in the 10.8.2 update, which has already been seeded to a few developers.

Have you experienced improved battery performance after upgrading to OS X 10.8.1?

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